Chert (specifically Yellow Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Category
Browse mineral, specifically a variety of quartz specimens identified by the Rock Identifier community.
Chert (specifically Yellow Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Chalcedony (likely dyed)
Chalcedony (a variety of Quartz), SiO2
Quartz
Silicon dioxide (SiO2)
Citrine Quartz
Crystalline Silicon Dioxide (SiO2) with Ferric Iron impurities
Jasper
Microcrystalline Quartz (SiO2)
Amethyst
Silicon dioxide (SiO2) with iron impurities
Basalt with Epidote Veining
Basalt (Mafic Extrusive Rock) with Ca2(Al,Fe)3(SiO4)3(OH)
Red Jasper
Microcrystalline Quartz (SiO2) with iron oxide inclusions
Rose Quartz (likely carved)
Rose Quartz (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Obsidian
Obsidian (volcanic glass)
Ocean Jasper
SiO2
Milky Quartz
Silicon Dioxide (SiO2)
Greenstone
Greenschist / Greenstone (contains epidote, chlorite, and actinolite)
Granite Pegmatite with Tourmaline and Muscovite
Pegmatite (Feldspar: KAlSi3O8, Quartz: SiO2, Schorl: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH))
Quartz Mineral Specimens
Quartz (Silicon Dioxide, SiO2)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with ferric iron impurities)
Quartz (specifically Milky Quartz/Quartzite)
Silicon Dioxide (SiO2)
Pink Granite
Potassium Feldspar-Rich Granite
Agate
Cryptocrystalline quartz (SiO2)
Ocean Jasper
Orbicular Jasper (Silicon Dioxide with impurities like Hematite and Chlorite, SiO2)
Green Porphyry (Flowerstone)
Porphyritic Andesite or Basalt
Epidosite (Unakite-related)
Epidosite (composed primarily of Epidote and Quartz)
Banded Agate (specifically Carnelian Agate)
Silicon dioxide (SiO2) - Chalcedony variety
Ruby (Pinkish-Red)
Corundum (Al2O3 with Chromium trace)
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Hematite/Goethite)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Moss Agate
Silicon Dioxide with inclusions (SiO2 + impurities)
Jasper, possibly Brecciated Jasper or Ocean Jasper due to patterns and color
Silicon Dioxide (SiO2), a variety of Chalcedony
Basalt with Quartz Veins
Mafic Igneous Rock with Quartz (SiO2) intrusions
Blue Quartz (specifically Dumortierite Quartz)
SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)
Amethyst (Pale/Raw Crystal)
Silicon dioxide with iron impurities (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Orange Aventurine (Sunstone-style Quartzite)
Silicon Dioxide (SiO2) with Goethite or Hematite inclusions
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation
SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)
Milky Quartz
Silicon Dioxide (SiO2)
Raw Topaz
Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2